refactor: standardize code formatting across components and utilities

- Updated formatting in SiteFooter and SiteHeader components for consistency.
- Refactored Badge, Button, Card, Separator components to improve readability.
- Enhanced markdown parsing logic in announcements and markdown utility functions.
- Adjusted ESLint configuration for better code quality checks.
- Added biome.json for BiomeJS configuration.
- Updated package.json and configuration files for improved dependency management.

components/ui/separator.tsx

@@ -1,25 +1,25 @@
-"use client"
+"use client";
 
-import { Separator as SeparatorPrimitive } from "@base-ui/react/separator"
+import { Separator as SeparatorPrimitive } from "@base-ui/react/separator";
 
-import { cn } from "@/lib/utils"
+import { cn } from "@/lib/utils";
 
 function Separator({
-  className,
-  orientation = "horizontal",
-  ...props
+	className,
+	orientation = "horizontal",
+	...props
 }: SeparatorPrimitive.Props) {
-  return (
-    <SeparatorPrimitive
-      data-slot="separator"
-      orientation={orientation}
-      className={cn(
-        "shrink-0 bg-border data-horizontal:h-px data-horizontal:w-full data-vertical:w-px data-vertical:self-stretch",
-        className
-      )}
-      {...props}
-    />
-  )
+	return (
+		<SeparatorPrimitive
+			data-slot="separator"
+			orientation={orientation}
+			className={cn(
+				"shrink-0 bg-border data-horizontal:h-px data-horizontal:w-full data-vertical:w-px data-vertical:self-stretch",
+				className,
+			)}
+			{...props}
+		/>
+	);
 }
 
-export { Separator }
+export { Separator };